The energy is released to enzymes that span the membrane and the enzymes use the energy that is released to pump protons across the membrane to form a region with a high concentration of protons. This establishes a proton gradient since the membrane is impermeable to protons. Proton gradients can then be used for other metabolic activities, such as in chemiosmosis.
In linear electron flow in the light reactions of photosynthesis, water is the source of electrons. The process involves the splitting of water molecules to release electrons, which are then used to reduce the electron carrier molecules in the electron transport chain.
Hydrogen ions are pumped across the mitochondria's inner membrane producing a concentration gradient
Oxygen (O2) is the electron acceptor in the Electron Transport Chain. "The electrons are passed to O2, the final electron acceptor of the electron transport system. This oxygen, now negatively charged because it has acquired additional electrons, combines with H+ ions, which are positively charged because they donated electrons at the beginning of the electron transport system, to form H2O." (Sherwood 36) References: Sherwood, Lauralee. Human Physiology: from Cells to Systems. 7th ed. Australia: Brooks/Cole, Cengage Learning, 2010. Print.
Hydrogen ions are pumped across the mitochondria's inner membrane producing a concentration gradient
Plants get their replacement electrons for photosynthesis from water molecules. During the light-dependent reactions of photosynthesis, water molecules are split to release oxygen and provide electrons for the electron transport chain.
The light reactions of photosynthesis involve a continuous flow of electrons through the electron transport chain, which is replenished by splitting water molecules to release more electrons. This process ensures a constant supply of electrons to keep the reactions running.
known as an electron transport chain. This process occurs in cellular respiration and photosynthesis where electrons move through protein complexes, releasing energy that is used to create ATP.
As electrons are passed along the electron transport chain (ETC), they release energy. This energy is used to pump protons across the inner mitochondrial membrane, creating a proton gradient. The flow of protons back across the membrane drives ATP synthase to produce ATP.
Electrons
Electrons are transferred and energy is released during chemical reactions, such as in redox reactions where one species loses electrons (oxidation) and another gains electrons (reduction). This transfer of electrons leads to the formation of new chemical bonds and the release of energy in the form of heat or light.
to create energy. as electrons are realeased from the water in the chlorophyll they get excited from the sunlight and create energy. later these electrons are taken by NADPH and FADH2 (the electron transport train) and used to create ATP in ATP synthase after the Krebs cycle
When a photon of light hits photosystem 2, it excites an electron within the reaction center of the photosystem. This electron is then transferred along an electron transport chain, resulting in the generation of ATP and the splitting of water molecules to release oxygen as a byproduct.